Car-door.



F. MATHEWS.

CAR DOOR APPLICATION FILED sPT.2o. I915.

Patented Oct. 30, 1917.

FRED MATHEWS, OF CHICAGO,

ILLINOIS, ASSIGNOR TO CLINTON GQlMURPHY, OF CHICAGO, ILLINOIS.

CAR-DO OB.

Specification of Letters Patent.

Patented Oct. 30, 1917.

Application filed September 20, 1915. Serial No. 51,588.

M invention relates to improvements in car oors, and its object is to provide a door which is partly hung from above and partly supported below, and when closed is held in position by an overhead trolley. at its front end and by an antifriction roller under its rear end, and to avoid the necessity for anti-friction rollers in the guide-brackets below the sill of the doorway where the freight being loaded or unloaded through the doorway is liable to injure them and cause them to seriousl interfere with the sliding movement of t e door. This I accomplish by the means hereinafter fully described, and asparticularly pointed out in the claims.

In the drawings:

Figure 1 is a side elevation of the central portion of a box car showing a sliding door embodying my improvements.

Fig. 2 is a vertical section of a fragment of the same taken on dotted line 22,' Fig. 1, and drawn to a larger scale.

Referring to the drawings A represents a box-car having a suitable doorway, the frame of which projects beyond the side of the car, and the lintel a of which has resting upon the projecting portion thereof an angle iron track I), the vertical web of of ljntel a.

.which is secured to the side of the car by bolts 0 or otherwise.

The doorway is closed by a suitable door B which may be of any suitable construction, but I prefer to use a door whose edges are bound by metal and whose upper and lower edges are protected by Z-bars D and 05-, respectively. Z-bar D protecting the upper edge of door B has its outer flange lapping down over the outer vertical surface thereof, and the web connecting its flange resting upon'thetop edge of the door and projecting inward toward the side of the door a distance practically correspondin to the extent of the projection he inner flange of this Z-bar D projects upward back of the lower depending portion of a ide-plate E whose upper portion is secure to the fascia e of the car and holds the upper portion of the door at I, FRED MATHEWS, a

in operative position against the side of the i car. The rear end of Z-bar D has the upper flange thereof ofiset obliquely outward to form a cam surface f, and when the door is closed this cam surface f engages and op-. poses a cam surface 9 made by pushing the lower edge of the guide-plate obliquely inward toward the side of the car, substantially as shown in the drawings.

The lower edge of the door, when open, is supported by antifriction Wheels h of brackets G, which latter are constructed similar to those for which Letters Patent of the United States were granted to me August 3, 1915, No. 1,148,607, and when the door is closed 1ts rear end is supported by the roller.

of the bracket nearest the doorway and the opposite end thereof is suspended by means of an overhead trolley I, which is journaled upon a stud H projecting from a suitable screw-plate K secured to the inner side of the door near the upper corner thereof nearest jamb F. This trolley-wheel travels upon a horizontal flange of the angle-iron track I) and sustains the forward edge of the door unaided and continues to do so until the door is moved toward its open position far enough for its lower edge to engage and be supported by the intermediate anti-friction-wheel brackets G. The horizontal' web of Z-bar 05 forms a tread for the lower edge of the door and engages wheels 72. as the door moves back and forth. The downwardly projecting flange of this Z-bar d depends back of said wheel kand holds the lower edge of the door in position against the car.

Immediately beneath the sill of the doorway and between bracket G and the jamb of the doorway two substantially Z-shaped retaining brackets is are secured to the side of the car, and the outer upwardly projecting flange of these brack'ets extends upward in front of the lower edge of the door and holds the door closed, but these brackets Ir: do not support the door unless wheel I should break while the door is in its closed position. These retaining brackets are not .as liable to become injured when the door is open by the freight being loaded into the car, or removed therefrom.

What I claim as new is: j

1. A car having a doorway the frame of which projects beyond the side of the car,

fraine, a fascia above said lint e1, and a guide-plate secured to the outer surface of and pro ecting down below said fascia, in

combination with a sliding door which is unsupported below said doorway, a Z-bar the web of which is secured to the upper edge ofsaid door and projects inward beyond the inner side thereof and the uppermost flange of which projects upward from said webback of the depending portion of said guide-plate, a wheel suitably journaled to and projectin from the inner side of said door near t e upper forward corner of the same which travels in said track, and brackets secured to the side of the car under and to the rear of the rear side of the door and in a horizontal plane below the door which support said door when it is open.

2. A car having-a doorway the frame of which projects beyond the side of the car, a fascia, a guide-plate secured to the outer surface of and having its lower edge de mam pending below said fascia, in combination with a sliding door which is unsup orted below said doorway, a wheel suita ly journaled to the inner side of said door near the upper forward corner of the same, a Z-bar the web of which is secured upon the upper edge of said door and projects In witness whereof I have-hereunto set my hand this 14th day of September, 1915.

FRED MATHEWS.

Witnesses:

FRANK D. THOMASON, FLORENCE MITCHELL.

of the car under andto the 

